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The RoboStar SBRS-5314HTG robot servo is packed with features offering the very best for robot users. This rugged metal gear servo is perfect for your custom robot or other automation project. The plastic and metal alloy case dissapate heat and features threaded mounting holes for machine screws. The high power brushless motor provides ample moving power and precision for your project. This RoboStar servo can accept voltages as high as 11.1V, a 3S Lipo!

Each servo includes a removable input wire lead that plugs directly to the side of the case, as well as plastic and alloy servo wheels.

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Easily the best servos I've found for the money. Mechanically they seem comparable to dynamixel servos, but are a fraction of the cost. There is room in the case to add custom electronics for torque control, if more advanced control is required.

I've bought lots of these servos, and they are the best I've ever found. Especially great is the idler wheel on the opposite side of the motor from the output shaft, which allows you to make a really solid robot joint. They move very smoothly and fast, and sit quietly at whatever position you send them to (unlike a lot of RC servos!). Some suggestions to the manufacturer: Make the servo case out of all-aluminum. The plastic which holds the rear bearing on the output shaft cracks under very high torque. I've cracked several of them running at 8.4 Volts, and then the shaft can move out of position and the gears skip. Incidentally, the gears are very good and survived all the skipping without damage. Plus, I would like this motor to be made available in a larger size/torque and a smaller size/torque, so they can be distributed in diminishing size along a robot arm.

These are amazing servos for the money. I purchased mine for a robotics project because I needed something with high torque, high speed, and a sturdy metal drivetrain. It also had to fit inside Actobotics channel, which it does perfectly. I also like that it uses a brushless motor.

The build quality is Chinese standard, meaning they do things like hot glue the header plugs into place. This, however, works to the advantage of anyone that wishes to move the location of the plug exit. If you go to the Thingiverse website and search for RoboStar, you'll find a new bottom plate that lets you do just that.

If I had to complain about this servo, I'd wish for larger mounting holes. For those curious about hardware sizes, the mounting holes for the servo itself take puny little M2 screws, as do the servo horn holes. The servo horn itself attaches to the servo with an M3 screw. The splines for the horn are Futaba 3F standard, and Actobotics hub horns will fit nicely.